Here, experimental and numerical studies on the gas explosion hazards of container type lithium-ion battery energy storage station are carried out. In the experiment, the LiFePO 4 battery module of 8.8kWh was overcharged to thermal runaway in a real energy storage container, and the combustible gases were ignited to trigger an explosion.
By revealing the disaster-causing mechanism of LIB energy storage station explosion accidents, it can lay the foundation for the safety design of energy storage systems and the prevention, control, and rescue of explosion accidents, ultimately promoting the large-scale application of LIBs in the field of energy storage.
The battery module of 8.8kWh is overcharged in a real energy storage container. The generation and explosion phenomenon of the combustible gases are analyzed. The numerical study on gas explosion of energy storage station are carried out. Lithium-ion battery is widely used in the field of energy storage currently.
Variation process of combustion rate in energy storage container during explosion. Due to the numerous battery modules installed in the container, the flame was limited in the middle aisle and on the top of the container. Fig. 7 a showed the combustion rate distribution at 0.24 second.
CC-BY 4.0 . In recent years, as the installed scale of battery energy storage systems (BESS) continues to expand, energy storage system safety incidents have been a fast-growing trend, sparking widespread concern from all walks of life. During the thermal runaway (TR) process of lithium-ion batteries, a large amount of combustible gas is released.
The gases released from a battery energy storage system are highly flammable and toxic. Carbon monoxide, carbon dioxide, hydrogen, methane, ethane, and other hydrocarbons are typically included in the gases that are released, depending on the battery chemistry involved.